Continuity mistake: When Kyun-woo carries the drunk girl into the motel room, there is a framed picture on the wall above the bed. The next morning it's gone and there are visible marks on the wall from where the picture hung.
My Sassy Girl (2001)
1 mistake
Directed by: Jae-young Kwak
Starring: Gianna Jun, Ji-hyun Jun, In-mun Kim, Tae-hyun Cha, Wok-suk Song
The Girl: You know why the sky is blue?
Kyun-woo: Because the reflection from the sunshine causes.
The Girl: Wrong! It's to make me happy. I wanted it to be blue, so it's blue. You know why fire is hot? It's all for me. I wanted it to be hot, so it's hot. You know why we have four seasons here in Korea?
Kyun-woo: For you?
The Girl: Correct.